"""
* | File        :	  epd7in5bc.py
* | Author      :   Waveshare team
* | Function    :   Electronic paper driver
* | Info        :
*----------------
* | This version:   V4.0
* | Date        :   2019-06-20
# | Info        :   python demo
-----------------------------------------------------------------------------
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documnetation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to  whom the Software is
furished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""


import logging
from inkycal.display.drivers import epdconfig

# Display resolution
EPD_WIDTH = 880
EPD_HEIGHT = 528


class EPD:
    def __init__(self):
        self.reset_pin = epdconfig.RST_PIN
        self.dc_pin = epdconfig.DC_PIN
        self.busy_pin = epdconfig.BUSY_PIN
        self.cs_pin = epdconfig.CS_PIN
        self.width = EPD_WIDTH
        self.height = EPD_HEIGHT

    # Hardware reset
    def reset(self):
        epdconfig.digital_write(self.reset_pin, 1)
        epdconfig.delay_ms(200)
        epdconfig.digital_write(self.reset_pin, 0)
        epdconfig.delay_ms(4)
        epdconfig.digital_write(self.reset_pin, 1)
        epdconfig.delay_ms(200)

    def send_command(self, command):
        epdconfig.digital_write(self.dc_pin, 0)
        epdconfig.digital_write(self.cs_pin, 0)
        epdconfig.spi_writebyte([command])
        epdconfig.digital_write(self.cs_pin, 1)

    def send_data(self, data):
        epdconfig.digital_write(self.dc_pin, 1)
        epdconfig.digital_write(self.cs_pin, 0)
        epdconfig.spi_writebyte([data])
        epdconfig.digital_write(self.cs_pin, 1)

    def ReadBusy(self):
        logging.debug("e-Paper busy")
        busy = epdconfig.digital_read(self.busy_pin)
        while (busy == 1):
            busy = epdconfig.digital_read(self.busy_pin)
        epdconfig.delay_ms(200)

    def init(self):
        if (epdconfig.module_init() != 0):
            return -1

        self.reset()

        self.send_command(0x12)  # SWRESET
        self.ReadBusy()  # waiting for the electronic paper IC to release the idle signal

        self.send_command(0x46)  # Auto Write RAM
        self.send_data(0xF7)
        self.ReadBusy()  # waiting for the electronic paper IC to release the idle signal

        self.send_command(0x47)  # Auto Write RAM
        self.send_data(0xF7)
        self.ReadBusy()  # waiting for the electronic paper IC to release the idle signal

        self.send_command(0x0C)  # Soft start setting
        self.send_data(0xAE)
        self.send_data(0xC7)
        self.send_data(0xC3)
        self.send_data(0xC0)
        self.send_data(0x40)

        self.send_command(0x01)  # Set MUX as 527
        self.send_data(0xAF)
        self.send_data(0x02)
        self.send_data(0x01)

        self.send_command(0x11)  # Data entry mode
        self.send_data(0x01)

        self.send_command(0x44)
        self.send_data(0x00)  # RAM x address start at 0
        self.send_data(0x00)
        self.send_data(0x6F)  # RAM x address end at 36Fh -> 879
        self.send_data(0x03)
        self.send_command(0x45)
        self.send_data(0xAF)  # RAM y address start at 20Fh
        self.send_data(0x02)
        self.send_data(0x00)  # RAM y address end at 00h
        self.send_data(0x00)

        self.send_command(0x3C)  # VBD
        self.send_data(0x01)  # LUT1, for white

        self.send_command(0x18)
        self.send_data(0X80)
        self.send_command(0x22)
        self.send_data(0XB1)  # Load Temperature and waveform setting.
        self.send_command(0x20)
        self.ReadBusy()  # waiting for the electronic paper IC to release the idle signal

        self.send_command(0x4E)
        self.send_data(0x00)
        self.send_data(0x00)
        self.send_command(0x4F)
        self.send_data(0xAF)
        self.send_data(0x02)

        return 0

    def getbuffer(self, image):
        # logging.debug("bufsiz = ",int(self.width/8) * self.height)
        buf = [0xFF] * (int(self.width / 8) * self.height)
        image_monocolor = image.convert('1')
        imwidth, imheight = image_monocolor.size
        pixels = image_monocolor.load()
        logging.debug('imwidth = %d  imheight =  %d ', imwidth, imheight)
        if (imwidth == self.width and imheight == self.height):
            logging.debug("Horizontal")
            for y in range(imheight):
                for x in range(imwidth):
                    # Set the bits for the column of pixels at the current position.
                    if pixels[x, y] == 0:
                        buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
        elif (imwidth == self.height and imheight == self.width):
            logging.debug("Vertical")
            for y in range(imheight):
                for x in range(imwidth):
                    newx = y
                    newy = self.height - x - 1
                    if pixels[x, y] == 0:
                        buf[int((newx + newy * self.width) / 8)] &= ~(0x80 >> (y % 8))
        return buf

    def display(self, imageblack, imagered):
        self.send_command(0x4F)
        self.send_data(0xAf)

        self.send_command(0x24)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(imageblack[i])

        self.send_command(0x26)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(~imagered[i])

        self.send_command(0x22)
        self.send_data(0xC7)  # Load LUT from MCU(0x32)
        self.send_command(0x20)
        epdconfig.delay_ms(200)  # !!!The delay here is necessary, 200uS at least!!!
        self.ReadBusy()

    def Clear(self):
        self.send_command(0x4F)
        self.send_data(0xAf)

        self.send_command(0x24)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(0xff)

        self.send_command(0x26)
        for i in range(0, int(self.width * self.height / 8)):
            self.send_data(0x00)

        self.send_command(0x22)
        self.send_data(0xC7)  # Load LUT from MCU(0x32)
        self.send_command(0x20)
        epdconfig.delay_ms(200)  # !!!The delay here is necessary, 200uS at least!!!
        self.ReadBusy()

    def sleep(self):
        self.send_command(0x10)  # deep sleep
        self.send_data(0x01)

        epdconfig.module_exit()
### END OF FILE ###
